# 响应代码

当请求失败时，住宅代理会返回一个 HTTP 响应代码，说明失败原因。请使用这些代码诊断问题并相应调整您的配置。

**500 - 内部错误**

内部处理失败 - 例如无法验证或解析某个请求组件。请重试请求。如果问题持续存在，请联系 IPRoyal Support。

**503 - 无可用出口**

没有与您指定的过滤条件匹配的代理出口节点。请检查您的会话参数（如国家、城市），并确认所请求的位置或过滤条件组合当前可用。

**504 - 出口连接失败**

已选定出口节点，但无法建立连接。这通常是暂时性网络问题。请重试请求或调整目标参数。


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.iproyal.com/cn/dai-li/huang-jia-zhu-zhai-dai-li/dai-li/ti-chu-qing-qiu/xiang-ying-dai-ma.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.